InuYasha the Movie: The Castle Beyond the Looking Glass

Inuyasha and company have finally destroyed Naraku. And each start to go in their separate ways. Shortly afterwards the full moon rises, and just keeps rising each night bringing with it the promise of danger. Kagura and Kanna go in search of a mirror, where locked inside is the ruler of the eternal night, Kaguya. To set her free they must gather five items and drop them into the five lakes of Fuji. Setting her free means the worst danger for Inuyasha and the others. (ANN)